Single Leg Entry

What This Is

The single leg takedown entry is the most widely used takedown in no-gi grappling. The practitioner drops their level below the opponent’s centre of mass, penetrates with a step to the outside of the opponent’s near leg, places their near shoulder in the opponent’s hip, and controls the leg. From here, multiple finish variants are available based on the opponent’s defensive response.

The single leg’s versatility comes from its adaptability. Unlike the double leg, which requires both legs to be controlled simultaneously, the single leg can be entered from many angles, finished in many ways, and converted to other positions (front headlock, back take, leg entanglement entry) when the primary finish is defended.

The single leg is also the primary recovery position when other takedown entries are defended. A shot that begins as a double leg and meets the sprawl often converts to a single leg as the near leg becomes accessible during the scramble. Understanding the single leg is understanding how to extract value from any takedown attempt that does not immediately finish.

The Invariable in Action

Hip access is the most important principle in single leg work. When the practitioner’s shoulder reaches the opponent’s hip — not just the knee or the ankle — the sprawl becomes mechanically impossible. The opponent cannot drive their hip back to defend because the shoulder is already there. A single leg that is grabbed below the hip (at the knee or lower) allows the opponent to step back and sprawl because the hip is still free.

This is the principle that distinguishes a high single (shoulder in the hip) from a low single (grip at the ankle). The high single sacrifices leg isolation for hip access; the low single sacrifices hip access for a grip further down the leg. Both require hip access to finish, but the high single establishes it at entry while the low single must create it during the attack.

The level change is not an optional preparation — it is the prerequisite for the penetration step. Without the hips dropping below the opponent’s centre of mass, the entry shot is too high and meets the opponent’s spine rather than their hip. The level change positions the practitioner’s shoulder to reach the hip on the penetration step.

The single leg controls one leg — the primary leg. To finish, the practitioner must also affect the secondary leg. The cut-the-corner finish trips the secondary leg; the run-the-pipe finish drives the opponent so their secondary leg cannot be planted to resist. INV-ST01 explains why the finish requires more than just controlling the primary leg: the secondary leg is what allows the opponent to rebalance and defend.

Entering This Position

From Over-Under Clinch

The underhook side creates the angle. Drop the level, penetrate to the near leg on the underhook side, shoulder in the hip. The underhook has already compromised the hip on that side — the level change completes the entry. See: Over-Under Clinch.

From Russian Tie

Step to the side of the controlled arm, drop the level, and enter the single leg as the opponent’s hip is exposed. The Russian tie creates the angle; the level change converts it to a takedown entry. See: Russian Tie.

From Ground — Wrestling Up

A practitioner in a bottom guard position can use the single leg as a wrestling-up tool — controlling the opponent’s near leg and elevating to standing as the opponent stands to pass. This converts guard work to single leg control without a level change from standing.

Hip Access — The Critical Principle

The distinction between a successful single leg and one that is sprawled is almost always hip access. A practitioner whose shoulder is at the opponent’s hip cannot be sprawled on — the hip is already controlled. A practitioner whose shoulder is at the opponent’s knee will be sprawled every time because the hip is free to drive back.

To achieve hip access: the level change must be deep enough that the shoulder reaches the hip on the penetration step. The penetration step must go to the outside of the opponent’s leg — stepping inside gives the opponent the angle to establish a front headlock. And the shoulder drive must be active and forward — not just reaching, but pressing the hip.

The rule of thumb: if the opponent’s hip is free, the single leg is not yet established. The entry is only complete when the shoulder is on the hip.

Finish Variants

Cut the Corner

Drive the opponent’s controlled leg toward their midline while stepping around their secondary leg — tripping the far leg. The opponent falls backward and to the side. This is the primary finish from a standing single leg and works against opponents who keep their weight back.

Run the Pipe

Drive forward through the opponent’s single leg, running them in the direction they are trying to step. The constant forward pressure prevents the secondary leg from being planted — the opponent’s running steps cannot generate the base needed to stay upright.

Pick and Dump

Lift the leg to remove the base, then dump to the side. Requires more strength than the other finishes and is most effective against opponents who base heavily on the controlled leg.

High Single to Double

From a high single (shoulder in the hip), drive the head through to the double leg position — both legs now controlled, the single converts to a double. See: Double Leg Entry.

Defence and Responses

The primary defence against the single leg is the sprawl — driving the hips back and the chest forward over the shooter. When sprawled, the shooter loses hip access and is in a compromised position. The response options from a sprawled single leg:

• Convert to the front headlock position — release the leg and establish head control from below. See: Standing Front Headlock.
• Continue to the leg — hold the leg and work around the sprawl to recover hip access.
• Pull to leg entanglements — if the opponent sprawls with one leg forward, drag the controlled leg to the mat and enter ashi garami or related leg entanglement positions.

The Jones Scramble Hierarchy

Craig Jones’ three-task hierarchy from defensive ground positions places the shoot as the second option — if standing up cleanly is not available, shoot to penetrate to a takedown. The single leg is the primary shot in this hierarchy because it can be entered from partial positions (one knee on the mat, all fours) where the double leg entry is not yet accessible.

The hierarchy: stand up first (structural superiority); if can’t stand, shoot to single leg (penetrate to takedown); if can’t shoot, build base and turtle. The single leg is the productive action when standing up directly is blocked.

Common Errors — and Why They Fail

Error: Grabbing the leg without achieving hip access. Why it fails: INV-ST02. The opponent’s hip is free — the sprawl removes the leg from the practitioner’s control. Correction: The level change must be deep enough that the shoulder reaches the hip simultaneously with the leg grab. Never grab the leg from the knee down without achieving hip access.

Error: Head inside the opponent’s knee (between the legs). Why it fails: Head inside creates the guillotine angle for the opponent and allows them to lock up the head with a front headlock. Correction: The penetration step goes to the outside of the opponent’s near leg. Head is outside the knee — on the side, not between.

Error: Insufficient level change — shooting while upright. Why it fails: INV-ST04. An upright shot meets the opponent’s upper body, not their hip. The shoulder cannot reach the hip if the practitioner has not dropped below the opponent’s centre of mass. Correction: The level change is complete when the practitioner’s hips are below the opponent’s belt line. Practise the level change as a standalone movement before combining it with the penetration step.

Drilling Notes

• Level change and penetration step. Drill the two-part entry: level change (hips drop, not just a lean), then penetration step to the outside. No leg grab yet — just the level change and the step. Feel the hip contact before grabbing. Twenty reps per side.
• Hip contact confirmation. From the single leg, have the partner apply the sprawl. If the shoulder is on the hip, the sprawl cannot complete. If the sprawl removes the leg, the shoulder was not on the hip — return to the level change drill. This drill builds the proprioception for hip access.
• Finish variants. From an established single leg, practise each finish variant cooperatively: cut the corner, run the pipe, pick and dump. Understand which finish the opponent’s stance and weight distribution makes available.

Ability Level Guidance

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